Stock and die



No. 625,089. Patented May I6, 1:99. B. P. 8. L. B. CURTIS.

STOCK AND DIE.

(Application filed Dec. 31, 1897. Renewed Nov. 4, 1898.)

(No Model.)

NITED STATES I PATENT OFFICE.

RODERICK P. CURTIS AND LEWIS B. CURTIS, OF SOUTHPORT, CONNECTICUT,ASSIGNORS TO CURTIS & CURTIS, OF BRIDGEPORT, CONNECTICUT.

STOCK AND DIE.

SPECIFICATION forming part of Letters Patent No. 625,089, dated May 16,1899. Application filed December 31,1897 Renewed November 4, 1898.Serial No. 695 ,517. (No model.)

To ctZZ whom it may concern.-

Be it known that we, RODERICK P. CURTIS and LEWIS B. CURTIS, citizens ofthe United States, residing at Southport, in the county of Fairfield andState of Connecticut, have invented certain newand useful Improvementsin Stocks and Dies; and we do hereby declare.

the following to be a full, clear, and exact description of theinvention, such as willenable others skilled in the art to which itappertains to make and use the same.

Our invention relates to certain new and useful improvements in theconstruction of stocks and dies, and has forits particular object toafford a specific construction of such device which shall be veryefficient and in which the threading or cut-off tools may be insertedand removed with great facility; and with these ends in view ourinvention consists in certain details of construction and combination ofparts, such as will be hereinafter fully set forth and then specificallybe designated by the claims.

In the accompanying drawings, which form a part of this application,Figure l is a front elevation of our improved stock and die with thecover-plate broken away; Fig. 2, a sec tion at the line a: a: of Fig. 1;Fig. 3, a perspective illustrating one of the threadingdies and itsoperating-screw in detached condition, and Fig. 4 is a bottomperspective showing a modified form of construction of threading-die.

Similar numbers of reference denote like parts in the several figures ofthe drawings.

constitute any radical departure in the mannor of making stocks anddies, nevertheless contribute materially toward the efficiency of thedevice.

In carrying out our invention -we employ the usual die-stock 1, which isprovided with the ordinary operating-handles 2, and we cut therein atdiametrically opposite points ways 3, which are rectangular incross-section and which open both into the face of the stock and intothe inner edge thereof. 4. are threading-dies which fit snugly withinthese ways, so as to be capable of sliding freely therein, and whichextend inwardly beyond the inner edge of the die-Stock, as clearly shownat Fig. 1. These dies are cut away at their rear ends from the underside, so as to form recesses 5 and hooks 6, as shown at Fig. 3.

7 are thumb screws which are driven through the edges of the stock fromthe outside and which extend within the ways 3. On the inner ends ofthese screws are formed buttons 8, which when the screws andthreading-dies are properly assembled extend within the recesses 5 andare inclosed by the hooks 6 and the bodies of the dies, so that it willbe dies will be forced forward or backward, as the case may be.

Instead of forming the hooks 6 so that they depend immediately in therearof the recesses 5-the dies may be cut from the bottom upward, so asto leave recesses 9v to accommodate the buttons 8, while hooks 10 mayextend toward each other from the side walls of the recesses, so as toembrace the buttons at the sides, as shown at Fig. i; but we prefer theconstruction shown at Fig. 3, although either of these constructionswill answer our purpose, since in this respect we aim to connect thedies with the screws, so as to give these dies a vertical clearance,whereby they may be picked out of the ways or inserted therein withoutdisturbing the screws, the dies being left perfectly plain on theirupper surfaces.

11 is a cover-plate which is pivoted at 12 to v clear that when thesescrews are operated the the die-stock and is provided at the oppositeside with a hook 13, which when the plate is closed embraces athumb-screw 14:, driven in the die-stock and by the operation of whichscrew said plate may be released or secured 15 are thu mb lock-nutsdriven on the screws 7 and which are jammed against the stock when theproper adjustment of the dies has been effected by the operation ofthese screws, by the use of which lock-nuts We are enabled to secure thedies as against any displacement owing to the accidental turning of thescrews.

In removing the dies the cover-plate is released and thrown back and thedies simply lifted from the ways out of engagement with the screws, andother dies may be inserted by simply dropping them within these ways, sothat the hooked portions of the dies will extend behind the buttons 8,while the latter will fit within the recesses 5.

The dies may be graduated on top, as shown at Fig. 1, in order to assistin the proper adjustment of the same.

Having thus fully and in detail described our invention, what we claimas new, and desire to secure by Letters Patent, is-- 1. The combinationof the die-stock having therein ways which open through the face of wayswhich open through the face of said stock and through its inner edge,the operatingscrews driven through the edges of the stock and extendingwithin said ways and provided at their inner ends with buttons, thethreading-dies having plain upper surfaces and guided within said Waysand provided on their rear extremities with recesses and hooks wherebysaid dies may be connected with said buttons with a vertical clearance,thumb lock-nuts on said screws and capable of being jammed against thestock, the cover-plate pivoted to the face of the stock and providedwith a hook, and the thumb-screw driven Within said stock, which screwis embraced by said hook in the closed position of the plate and is thenoperated to firmly clamp the latter, substantially as set forth.

In testimony whereof we affix our signa= tures in presence of twowitnesses.

RODERICK P. CURTIS. LEWIS B. CURTIS. WVitnessesi F. W. SMITH, Jr., M. I.LONGDENi

